ZMIME
Image model comparison · 2 models · Updated Nov 2, 2026

Imagen 4 Ultra vs Lucid Realism

Newest: Lucid Realism · Image editing: Neither edits images · Self-hosting: No open weights. Not enough arena votes yet for a quality score, so this is a spec comparison.

  1. Google

    Imagen 4 Ultra

    Released May 24, 2025

    • Text to image
    • Arena1,146
    • From$0.06/image
    • Max size—
    Full specs Remove Imagen 4 Ultra

  2. Leonardo.Ai

    Lucid Realism

    Released Jun 1, 2025

    • Text to image
    • Arena—
    • From—
    • Max size—
    Full specs Remove Lucid Realism

  3. Add a model

    Make it a three-way comparison.

01 — At a glance

Where they differ

Quality is the arena score from blind, side-by-side human votes. Price, length and resolution come from each lab’s own listings.

  • NewestLucid RealismImagen 4 Ultra May 24, 2025 · Lucid Realism Jun 1, 2025
  • Widest inputsSame inputsImagen 4 Ultra: Text prompts · Lucid Realism: Text prompts
  • Image editingNeither edits imagesTakes a reference image as input: Imagen 4 Ultra no · Lucid Realism no
  • Self-hostingNo open weightsBoth are available only through APIs and apps
  • Most API hostsSame reachImagen 4 Ultra: 1 · Lucid Realism: 1
02 — Side by side

Every spec in one table

Dashes mean the data is not published.

Imagen 4 Ultra vs Lucid Realism specifications side by side
SpecificationImagen 4 UltraGoogleLucid RealismLeonardo.Ai
Quality (blind human votes)
Text to image arenaElo-style score · higher is better1,146 ±4#37 of 82 · 388,723 votes—
Price
Starting price$0.06/image standard—
How it is billedPer image—
Output
ProducesImagesImages
Inputs
Text promptsYesYes
Reference images (editing)NoNo
Access
WeightsProprietaryProprietary
API hosts11
ReleasedMay 24, 2025Jun 1, 2025
03 — Questions

Which should you choose?

Which is better, Imagen 4 Ultra or Lucid Realism?

Neither model has enough arena votes for a reliable quality score yet, so this page compares specs only. Run the same three or four prompts through each and judge the results.

Which is cheaper?

Imagen 4 Ultra costs from $0.06/image (standard). Lucid Realism has no published per-image price. Prices are list rates and change often; check the lab before budgeting.

What is the difference between Imagen 4 Ultra and Lucid Realism?

Imagen 4 Ultra is an image model from Google (May 24, 2025), taking text prompts and producing images. Lucid Realism is an image model from Leonardo.Ai (Jun 1, 2025), taking text prompts and producing images.

Which is newer?

Imagen 4 Ultra May 24, 2025; Lucid Realism Jun 1, 2025.

Which can edit an existing image?

Takes a reference image as input: Imagen 4 Ultra no; Lucid Realism no.

Can I run any of these on my own hardware?

No open weights. Both are available only through APIs and apps.

04 — Keep comparing

Related comparisons